clausen



H. P. CLAUSEN.

TELEPHONE SYSTEM.

APPLICATION FILED Auaso, I9I.

Patented Sept. 23, 1919.

2 SHEETS-SHEET l.

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H. P. CLAUSEN.

TELEPHONE SYSTEM.

APPLICATION FILED AuG.3o, I9I6.

Patented Sept. 23, 1919.

2 SHEETS-SHEET 2.

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UNITE AT PATET OFFICE.

HENRY P. CLAUSEN, 0F MOUNT VERNON, NEW YORK, .ASSIGNOR TO WESTERNELECTRIC COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEWYORK.

TELEPHONE SYSTEM.

Specification of Letters Patent.

Patented Sept. 23, 1919.

Application filed August 30, 1916. Serial No. 117,623.

T0 all whom it 'may concern Be it known that I, HENRY P. CLAUSEN, acitizen ot' the United States, residing at Mount Vernon, in the countyof Vestchester and State of New York, have invented certain new anduseful Improvements in Telephone Systems, of which the following is afull. clear, concise, and exact description.

The present invent-ion relates to telephone lines of the type employingmachine switches.

It is frequently desirable, when a subscriber leaves his substation,that calls intended t'or this substation be diverted to anothertelephone station where the call will receive attention.

The main feature of this invention, therefore. is a circuit arrangementwhereby a call intended for one substation will actuate a call signal atanother substation where certain information may be given to the callingparty.

Referring to the drawings: Figure 1 rep- :resents diagrammatically aportion of a telephone system employing the present invention; thedotted rectangles shown in this figure represent diagrammaticallyconnectors. the circuit arrangement of which is shown in Fig. 3. Fig. 2illustrates diagrammat-ically a. portion of a telephone system employinga modified form ot the present invention. In this diagram also, thedotted rectangle represents a connector. Fig. 3 shows a suitable circuitarrangement for operating the connectors which are employed in thissystem.

The vform of invention disclosed in Fig. 1 is particularly adapted tothe use of a subscriber who has two telephones, one of which is locatedat his office and the other at hisv residence. With the presentinvention, it will be possible for the subscriber on leaving his otce toset up a circuit by which the line signals of both of his telephoneswill bc operated when a call comes to the telephone at his office.

Referring to Fig. 1. 5 designates the usual substation apparatus whichmay be located at the ofice of the subscriber. When the subscriber isabout to leave his substation, he will remove his receiver from thehook. This operation causes the brushes 6 and 7 of the linder to engagethe contacts S and 9 ot his line. The subscriber will then transmit, bymeans of his sendingr device, impulses corresponding to the digits of apreviously assigned number, which will set the connector represented inFig. 1, by the brushes l0 and test brush 11, on the contacts 12 and testcontact 13. This operation places ground on test contact 13 and therebyactuates relay 14 over the following circuit: grounded battery,left-hand winding of relay 14 and conductor 15 to grounded contact 13.Relay 14 thereupon attracts its armatures and at its righthand armatureestablishes a locking circuit extending from grounded battery,resistance 16, conductor 17, front contact and armature of relay 14,right-hand winding of this relay to ground. Relay 14 at its left-handarmatures establishes a circuit which connects substation 5 withsubstation 18. This circuit may be traced as follows: substationapparatus 5, conductor 19, front contact and innermost. left-handarmature of relay 14, conductor 20, substation apparatus 18, conduc-toi`21, front contact and outermost lefthand armature of relay 14, conductor22 to substation apparatus 5.

Substation 18 may similary be connected to sub-station 5 by removing thereceiver at substation 5 which causes brushes 23 and 24 of the finder toengage contacts 25 and 26. The subscriber then transmits` impulsescorresponding to the assigned number, and sets the brushes 27 and testbrush 28 of the connector on the contacts 29 and test contact 30. Thisalso places ground on contact 30 which causes relay 14 to be energizedover a circuit which may be traced from grounded battery, left-handwinding of relay 14, conductor 15, conductor 31 to grounded Contact 30.Relay 1-1- thereupon attracts its armatures. as above described, andalso completes a locking circuit through its right-hand winding. vWhenit is desired to sever the connection between substations 5 and 1S, thesubscriber located at either of these stations will transmit impulsescorresponding to the digits of another previously assigned number whichwill place the brushes of the connector, in the case of the connectorassociated with substation 18, on to contacts 32 and test contact 33,This will establish a shunt circuit about the relay 14. which shuntcircuit may be traced from grounded battery, resistance 16, conductor34, to grounded test contact 33. Similarly from substation 5.- thebrushes of the connector may be directivel)v set upon the contacts 35and test contact 36, which will I likewise establish a shunt circuitabout the;

locking winding of relay 14.

With the left-hand armaturesof rela 14 in their attracted position, whena ca ing line L is extended by means of switches' represented by switchbrushes 37, 38 and 39 t-o the contacts corresponding to the lineconnected with sub-station 5, the application of ringing current to thisline will actuate the ringing devices at both of the substations 5 and18.

Referring to Fig. 2, in this arrangement,

lwhen the subscriber whose substation is indicated at 50 is about toleave his office, he may dial a previously assigned number which willconnect him to a special operator at the telephone exchange. Afterhaving dialed thls number by sending additional impulses, he willactuate an auxiliary switch which will complete circuits for operatingvarious signals at the exchange. These signals will inform the operatorof his whereabouts or when he will 'return to. his oiiice. y

When the subscriber at substation 50 removes his receiver from itsswitchhook, the brushes 51 and 52 of the finder will locate the contacts53 and 54 of this calling line. The subscriber then operates his dialswitch to send impulses corresponding to the digits of a previouslyassigned special number which set the brushes 55, 56 and 57 on tocontacts 58 and 59 and dead contact 60. Relay 61 is thereupon actuatedover` a circuit which may be traced from grounded battery, left-handwinding of relay 61, contacts 59, the link circuits previ-1 ouslyestablished through the substation 50, upper side of the line to contact58, normally closed contact 62, right-hand winding of relay 6l toground. Relay 61 attracts its armature and completes an energizingcircuit for the slow-releasing relay 63 which extends from groundedbattery, relay 63, front contact and armature of relay 61 to ground.When the subscriber operates Vhis dial to send additional impulsescorresponding to the various signals at the exchange, the armaturepfrelay 61 will be momentarily retracted. This completes an energizingcircuit for the slow-releasing magnet 64, which circuit extends fromgrounded battery, relay 64, front contact and armature of relay 63, backcontact and armature' of relay 61 to ground. Relay 64 attracts itsleft-hand armature and establishes a maintaining circuit about thenormally closed contact 62 the purpose of which will be herein laterdescribed. At the same time that relay 63 attracted its armature, anenergizing circuit for the motor magnet 65 of the auxiliary switch, vwasestablished which extends from grounded battery, magnet 65, conductor66, armature and front contact 4of relay 63, armature and back contactof relay 61 to ground. In response to the additional impulses sent,motor magnet 65 operates the auxiliary switch brush 67 to engage thevarious contacts `90, which in turn closes a break-point in theenergizing circuit of the lamp signals 68, 69, 70, 71V and 72. Themaintaining circuit established about the offnormal contact 62 isprovided to prevent any further actuation of the motor magnet when theswitch has moved to an off-normal position.

In this arrangement, when a call is extended'fromq the line L by meansof the connecting switch brushes 73, 74 and 75 to the substation 50, theapplication of ringing current to this line will momentarily energizerelay 76. When relay 76 is` energized, it attracts its armature andcompletes a lockin circuit which extends groundedgbattery, through oneof the lamp signals, forexample, lamp 68, conductor 7 7, contact 90,switch brush 67, armature and front contact of relay 76, contact 7'8,contact member 79 to ground. The operator located at .the exchange notesthe actuation of signal 68 and inserts a plug (not shown) into a jack80. This causes arm 81 to move contact member 79 out of engagement withjcontact 78, whereupon the energizing circuit for lamp 68 isinterrupted. The operator ,then informs the calling party of theinformation indicated by the lamp signal 68 land when the subscriberreturns to his oiiice, he may call up and learn if the operator hasanswered any calls directed to his oflice. y

The subscriber at substation 5() may wipe out these connections in thefollowing manner; when he removes his receiver from the switchhook atsubstation 50, brushes 51 and 52 will engage the contacts 53 and 54.cor-- responding to hisb line;v he will then transmit impulsescorresponding to a number previously assigned for the purpose of wipingout the connection. This will set brushes 82, 83 and 84 on the contacts85, 86 and 87. This places ground on contact 87, and release magnet 8 8receives an energizing impulse over acircuit extending from groundedbattery, release magnet 88, contact v87. Release magnet 88 attracts itsarmature and completes a locking circuit which is mainfrom tained untilthe switches are restored to nor will be received over a circuitextending from grounded battery, release magnet 88, and key 99 toground. Y

The circuits employed in establishing the various link connections ofthe present invention may be of any preferred form. The circuits foroperating the nal or connector switch are disclosed in Fig. 3 and will'be hereinafter described.

Vhen the the link circuits of the system disclosed in Figs. 1 and 2 havebeen extended to the connectors by means of the line and selectorswitches, the stepping relay 100 of the connector is energized over acircuit which may be traced from grounded battery, left-hand winding ofrelay 100, upper side of the line, through the link circuits, over thelower side of the line, righthand winding of relay 100 to ground.Stepping relay 100 attracts its armature and thereby comple-tes anenergizing circuit for the slow-releasing relay 101. This circuitextends from grounded battery, relay 101, front contact and armature ofrelay 100 to ground. Relay 101 then attracts its armatures. In responset0 the operation of the sending device, relay 100 momentarily retractsits armature and completes an energizing circuit for the secondslowsreleasing relay 102. This circuit extends from grounded battery,relay 102, front Contact and armature of relay 101, back contact andarmature ofrelay 100 to ground. Relay 102 then attracts its armaturesand completes an energizing circuit for the escape magnet 103, whichcircuit extends from grounded battery, escape magnet 103, right-handarmature and front contact of relay 102 to ground.

lVlien the armatures of relay 101 were attracted a break point in theoperating circuit of the primary motor magnet 10-1 was closed. Each timethat the armature of relay 100 is retracted, due to the interrupting ofits energizing circuit at the sending device, the operating circuit forprimary motor magnet 104 is completed. This circuit extends fromgrounded battery, primary motor magnet 104, side-switch wiper 105 in itsfirst position, conductor 106, front contact and right-hand armature ofrelay 101, back contact and armature of relay 100 to ground. At theclose of the irst series of impulses, relay 100 holds its armatureattracted for a. relatively long interval, thereby interrupting theenergizing circuit of second slow-release relay 102 at the back contactand armature of relay 100. Relay 102 denergizes and interrupts theoperating circuit of escape magnet 103 at the front contact andright-hand armature of relay 102. The escape magnet in this instanceoperates on its denergization to move the side-switch wipers into thesecond position.

The impulse-sending device is then actu ated to send impulsescorresponding to the units digit of the assigned number, whereuponslow-releasing relay 102 is again energized by reason of the momentaryretractions of the armature of relay 100. The operating circuit for thesecondary magnet, in parallel with this last named circuit, extends fromgrounded battery, secondary motor magnet 107, side-switch wiper 105 inits second position, conductor 106, front contact and right-handarmature of relay 101, back contact and armature 100 to ground. At theclose ot' the units series of impulses, relay 100 is maintainedenergized, whereupon the energizing circuit of relay 102 is againinterrupted as previously described, and by retracting its armaturecauses escape-magnet 103 to be denergized. The side-switch wipersthereupon move into their third position. y

It will be noted that when side-switch wiper 110 moves into its thirdposition` the test contact of the desired set of contacts will beconnected to ground.

If, for any reason, the desired contact cannot be seized due to thepresence of ground on its test contact, a circuit for the releasingmagnet 108 will be completed which may be traced from grounded battery,magnet 109, oil-normal contact 109, lefthand armature and bac-k contactof slowreleasing relay 102, side-switch wiper 110 in its secondposition, conductor 113, to ground.

wWhen this connecting circuit arrangement is employed in the systemdisclosed in Fig. 2, after the brushes of the connector have been setupon the desired set of terminals. line relay 100 remains energized. Atits front contact and innermost armature an energizing circuit iscompleted for slowreleasing relay 101 from grounded battery. frontcontact and innermost armature to ground. Vhen the subscriber sends thead ditional impulses, motor magnet 65 places brush 67 in a position toenergize the desired signals G8, 69, 70, 71 or 72, as line relay 100momentarily retracts its outermost right-hand armature, therebyinterrupting the operating circuit of relay 61. This circuit may betraced from grounded battery, left-hand winding of relay 61, contact 59,brush 56, lower side of the line, side-switch wiper 111 in its thirdposition, conductor 112, front contact and outermost right-hand armatureof relay 101, front contact and outermost armature of relay 100,conductor 113` side-switch wiper 114 in its third position, brush 55,contact 5S. normally closed contact 62. right-hand winding of relay 61,to ground. ln this way the impulses of the callingr dial are repeated tocontrol the operating circuits of motor magnet 65.

The release of the line and selecting switches is accomplished by thecalling party replacing his receiver on the switchhook. This operationcauses the line relay 100 of the connector to dencrgize and to retractits armature. The energizing circuit of relay 101 is interrupted vat thefront contact 4and innermost right-hand armature of relay 100. Byretracting its armatures the relay 101 completes Ia release circuit forthe connector which may be traced from grounded battery, release magnet108, olf-normal contact 109, back contact and left-hand armature ofrelay 101, back contact and innermost right-hand armature of relay 101,back contact and innermost right-hand armature of line relay 100, toground. rIhe .extending said line to said stations, means includingautomatic switching` means for interrelating the call signals of saidstations, and means for restoring said switching means to normalposition.

2. In a telephone system, a primarytelephone station and a secondarytelephone station each provided with a call signal, a telephone line,means for extending said line to said primary and said secondarystations,

`an automatic switching device, an operating circuit for the call signalat said secondary telephone station controlled in part by said automaticswitching device, whereby said signalsy are simultaneously actuated, and

means for opening said circuit.

3. In a telephone system, a primary sub.- station, a secondarysubstation, telephone lines leading to said substations, automaticswitching means, means controlled through said automatic switching meansyfor connecting saidl substations in multiple to said lines prior to theinitiation of a call to said substations.

t. In a telephone system, a central station,

a 'plurality of substations, connected therewith, and means at thecentral station controlled by a subscriber at one substation forimmediately diverting a call intended for said .substation to anothersubstation.

5. In a telephone system, a primary sub- I station, al secondarysubstation, telephone lines leading to said substations, a-telephoneline individual to, and connecting said primary substation and saidsecondary substation, said last-mentioned line having a normally opencontact therein, automatic switching means, land means controlledthrough said automatic switching means for closing said contact.

' 6.. In a telephone system, a primary substation, a secondarysubstation, telephone lines leading to saids'ubstations, va telephoneline individual to, and connecting said pri- .said secondary telephonestations as called whereby said signals are simultaneously action, saidlast-mentioned line having a normally open contact therein,electromagnetic vmeans for closing said contact and selectively operatedautomatic switching means for operating said electromagnetic means.

7. In a telephone system, a primary telephone station provided with acall signal, a secondary telephone station provided with a call signal,a telephone line, means for ex-y t, tending said line to said telephonestations "i as called stations, means including automatic switchingmeans for interrelating the call signals of said stations, and means forrestoring said switching means to normal position. 4.

8. In a telephone system, a primary staftion and a secondary station,each provided with a call signal, a telephone line, means for extendingsaid line to said primary and stations, an automaticswit-ching device,an. l operating circuit for the call signal at said secondary telephonesubstation controlled in part by said automatic switching device tuated,and means' for opening said circuit.

9. In a telephone system, a primary substation, a secondary substation,telephone lines leading to said stations, automatic switching means,means controlled b-y one of said stationsv through said automaticswitching means for simultaneously'connecting said substations inmultiple to said lines.

10. In a telephone system, a primary substation, a secondary substation,telephone lines leading to said substations, and means forconnectingsaid substations in multiple to said lines priorto theinitiation of a call to said substations.

11. In a telephone system, a telephone exchange, a plurality oftelephone stations associated therewith, and means controlled -from oneof said telephone stations for immediately diverting a' call from said.last 110 mentioned telephone station to another telephone station.l

`12. In a telephone system, a telephone exchange, a plurality oftelephone stations associated therewith, and means controlled from oneAof said telephone stations for diverting a call from said last mentionedtelephone station to another 'telephone station prior to the initiationof said call.

13. In a telephone system, an exchange, a plurality of telephonestations associated therewith, and automatic means controlled from, oneof said telephone stations for immediately diverting a call from saidvlast mentioned station to another telephone station. v

14. In a telephone system, an exchange, a plurality of telephonestations associated therewith, and directively operable lmeanscontrolled from one of said telephone sta- '130 tions for immediatelydiverting a call from station, a secondary substation, telephone saidlast mentioned station to another telelines leading to said substations,and means phone station. controllable from one of said substations for15. In a telephone system, an exchange, a connecting said substations inmultiple to 15 5 plurality of telephone stations associated said linesprior to the initiation of a call therewith, and direetivelyA operablemeans t0 said substatons. controlled 'from one 0f said telephone sta- Inwitness WlleleOf I hereunto Subscribe tions for diverting a call fromsaid last menmy name this 28th day of August, A. I). tioned station toanother telephone station .1916. 10 prior to the initiation of saidcall. Y

16. In a telephone system, a primary sub- HENRY P. CLAUSEN.

